A coating fixture, a coating turntable and a coating device

Abstract

The utility model discloses a kind of coating fixture and coating rotary table and coating equipment, comprising: first rotating main body, along first axial rotation is located in body;Second rotating main body, along second axial rotation is located in first rotating main body, and rotation is matched on the outside of body;Third rotating main body, along third axial rotation is matched on second rotating main body;Body is used for biasing on rotary table, first rotating main body is used for under the drive of rotary table along first axial rotation, drive second rotating main body revolves around first axial, so that second rotating main body is under the rotation matching effect of body drive, also simultaneously along second axial rotation, drive third rotating main body along third axial rotation, to drive the rotation of coating object arranged on third rotating main body, can make the cumulative deposition angle on each coating surface of coating object consistent, deposition film thickness is similar.

Description

Technical Field

[0001] This utility model relates to the field of vacuum coating processing technology, and in particular to a coating fixture, a coating stand, and a coating equipment. Background Technology

[0002] Vacuum coating is a technology that deposits materials onto the surface of a workpiece in a vacuum environment, and it is widely used in optics, electronics, automotive, aerospace, and other fields. Fixtures play a crucial role in vacuum coating by fixing, supporting, and positioning the workpiece. Selecting the appropriate fixture type and material, and designing a reasonable fixture structure based on the workpiece's shape, size, and coating requirements, can significantly improve coating results and production efficiency. Fixtures are generally classified into two-stage fixtures, three-stage fixtures, and special-purpose fixtures, with two-stage and three-stage fixtures being the most commonly used in the vacuum coating field.

[0003] However, the commonly used three-level fixtures in the industry often have the following problems when coating products with 3D surface coating requirements:

[0004] (1) Due to the shading effect between the workpiece and the fixture, there is a large difference in color and performance between the front and side of the workpiece.

[0005] (2) The upper and lower end faces of the workpiece need to be adjusted by adjusting the coating angle in order to be sputtered onto the film layer, and there are still significant differences in color and performance.

[0006] (3) The relative angle between the workpiece and the target cannot be adjusted, so the cumulative deposition angle (cumulative deposition amount) on each surface of the workpiece cannot be consistent.

[0007] Therefore, it is necessary to design a new type of coating fixture to solve the above problems and fully meet the requirements of 3D surface coating. Utility Model Content

[0008] The purpose of this utility model is to overcome the above-mentioned defects in the existing technology and provide a coating fixture, a coating frame, and a coating equipment.

[0009] To achieve the above objectives, the technical solution of this utility model is as follows:

[0010] This utility model provides a coating fixture, comprising:

[0011] ontology;

[0012] The first transmission mechanism includes a first rotating body, which is rotatably disposed in the body along a first axial direction;

[0013] The second transmission mechanism includes a second rotating body, which is rotatably disposed in the first rotating body along a second axis and rotatably fitted on the outer side of the main body;

[0014] The third transmission mechanism includes a third rotating body, which is rotatably fitted onto the second rotating body along a third axis.

[0015] The main body is used to be offset on the rotating frame, and the first rotating main body is used to rotate along the first axis under the drive of the rotating frame, thereby driving the second rotating main body to revolve around the first axis. Under the rotational cooperation of the main body, the second rotating main body also rotates along the second axis, thereby driving the third rotating main body to rotate along the third axis, so as to drive the coating object disposed on the third rotating main body to rotate.

[0016] Furthermore, the first axis and the second axis are parallel; and / or, the first axis and / or the second axis are orthogonal to the third axis.

[0017] Further, the second transmission mechanism is one unit, or multiple second transmission mechanisms are arranged around the first axial direction; the main body includes a chassis and a first rotating engagement part disposed on the chassis, the first rotating body includes a turntable, a first rotating shaft is provided at the rotation center of the turntable, the first rotating shaft is coaxial with the first axial direction, the first end of the first rotating shaft is rotatably disposed in the chassis and the first rotating engagement part, the second rotating body includes a second rotating shaft rotatably disposed in the turntable, the second rotating shaft is coaxial with the second axial direction, a second rotating engagement part is provided on the second rotating shaft located on one side of the turntable, the second rotating engagement part is rotatably engaged with the outside of the first rotating engagement part, and a third rotating engagement part is provided on the second rotating shaft located on the other side of the turntable, the third... The rotating body includes a third rotating shaft, which is coaxial with the third axis. A fourth rotating engagement part is provided on the first end of the third rotating shaft, which rotates in engagement with the third rotating engagement part. A clamping mechanism is provided on the second end of the third rotating shaft, which is used to hold the coating object. When the first rotating shaft rotates under the drive of the rotating frame, it drives the second rotating shaft to revolve around the first rotating shaft through the turntable. The second rotating shaft also rotates simultaneously under the rotational engagement between the second rotating engagement part and the first rotating engagement part. The second rotating shaft drives the third rotating shaft to rotate through the rotational engagement between the third rotating engagement part and the fourth rotating engagement part, thereby driving the coating object set on the clamping mechanism to rotate.

[0018] Further, the second rotating shaft includes a fourth rotating shaft and a fifth rotating shaft connected along the second axial direction. The fourth rotating shaft is rotatably disposed in the turntable. The second rotating engagement part is disposed on the fourth rotating shaft. A plurality of third rotating engagement parts are sequentially and spaced apart along the axial direction on the fifth rotating shaft. A first support part is provided on one side of the fifth rotating shaft. The first support part is disposed on the turntable. There are a plurality of corresponding third transmission mechanisms. The third rotating shaft of each third transmission mechanism is rotatably disposed in the first support part. The first end of each third rotating shaft is correspondingly provided with the fourth rotating engagement part. Each fourth rotating engagement part is rotatably engaged with one third rotating engagement part. The second end of each third rotating shaft is correspondingly provided with the clamping mechanism. Each clamping mechanism is used to correspondingly set one of the coating objects.

[0019] Furthermore, it also includes: an angle adjustment mechanism, which is used to adjust the direction of rotational engagement of the third rotating body on the second rotating body to adjust the orientation of the third axis relative to the second axis; wherein, the angle adjustment mechanism includes a first support portion, which is configured to be able to rotate around the second axis on the turntable and can be fastened to the turntable. By rotating the first support portion around the second axis at a required rotation angle relative to the fifth rotating axis in an unfastened state, the third rotating axis on the first support portion is driven to follow, thereby changing the engagement position of the fourth rotating engagement portion on the third rotating engagement portion. Thus, by adjusting the orientation of the third axis relative to the second axis, the orientation of the coating object when it is rotated to be close to the coating source by the rotation of the turntable is adjusted; and / or, it also includes: a conductivity enhancement mechanism, which includes a conductive brush disposed on the turntable. The conductive brush is fixed on the turntable and elastically abuts against the side of the fourth rotating axis.

[0020] Furthermore, a top plate is connected to the top surface of the turntable away from the main body. The first rotating shaft and the fourth rotating shaft extend from the top surface of the top plate away from the main body. A circular groove surrounding the fourth rotating shaft is provided on the top surface of the top plate. The fourth rotating shaft extends from the center of the bottom surface of the groove. A circular base is provided on the first end of the first support part. The first support part is engaged with the groove through the base, realizing rotation on the turntable around the second axis at the required rotation angle relative to the fifth rotating shaft. A first arc-shaped through groove is provided on the surface of the base. A first fastening hole is provided on the bottom surface of the groove. By passing a first fastener through the first arc-shaped through groove and tightly engaging with the first fastening hole, the first support part is secured. The top plate is fastened to the turntable. The first rotating shaft passes through the second end of the top surface of the top plate and is rotatably fitted with a top cover. The top cover is also rotatably fitted to the second end of the fifth rotating shaft away from the fourth rotating shaft. The top cover is connected to the top surface of the turntable through a second support part. The end face of the second end of the first support part is provided with a second fastening hole. The surface of the top cover is correspondingly provided with a second arc-shaped through groove. By allowing the second fastener to pass through the second arc-shaped through groove and loosely fit with the second fastening hole, the first support part is driven to slide and rotate along the second arc-shaped through groove. By allowing the second fastener to pass through the second arc-shaped through groove and tightly fit with the second fastening hole, the second end of the first support part is positioned on the top cover.

[0021] Furthermore, the clamping mechanism includes a socket connected to the second end of the third rotating shaft and a fixture for engaging with the socket. The socket includes a housing with a cavity inside. The cavity contains a rolling element and an elastic element. One end of the elastic element elastically abuts against the inner wall of the cavity, and the other end of the elastic element elastically abuts against the rolling element. The surface of the housing has a plug-in port communicating with the cavity. One end of the fixture has a plug with a slot on its surface. When the plug is inserted into the engagement position in the plug-in port, the rolling element elastically falls into the slot, causing the fixture to engage with the socket. The other end of the fixture is used to set the coating object.

[0022] Furthermore, the third rotating engagement part includes a third gear, the fourth rotating engagement part includes a fourth gear, or the third rotating engagement part includes a first gear wheel, and the fourth rotating engagement part includes a second gear wheel.

[0023] This utility model also provides a coating rotating frame, on which the above-mentioned coating fixture is provided. The rotating frame is used to drive the fixture to revolve around the rotation center of the rotating frame, and by driving the first rotating body to rotate along the first axis, the fixture is also driven to rotate simultaneously.

[0024] This utility model also provides a coating device, including a coating cavity, wherein the coating cavity is provided with the above-mentioned coating rotating frame.

[0025] This utility model has the following advantages:

[0026] (1) By designing a first transmission mechanism, a second transmission mechanism, and a third transmission mechanism that are sequentially coupled, a four-axis linkage coating fixture can be formed in conjunction with the rotating frame. Compared with the existing two-level or three-level fixtures that can only rotate around the vertical axis, the coating fixture of this utility model can also rotate around the horizontal axis (third axis). Not only can it make the front and side of the object to be coated have similar particle deposition angles by passing through the coating source of the coating equipment at a certain tilt angle, but it can also make the various sides of the object to be coated rotate alternately towards the coating source by rotating along the third axis. This makes the cumulative deposition angle (cumulative deposition amount) on each coating surface of the object consistent and the deposition film thickness similar. This avoids the problem of large differences in color and performance between the front and side of the object in the prior art and realizes the high-quality coating requirement of uniform 3D surface of the object.

[0027] (2) By adopting a reasonable fixture structure design, the shading effect is avoided, and the uniformity of the film thickness distribution on the front and side surfaces of the coated object is ensured.

[0028] (3) By designing a clamping mechanism with quick insertion performance, the coating object can be loaded and unloaded quickly, which improves production efficiency.

[0029] (4) Based on the rational design of each level of transmission mechanism (first transmission mechanism, second transmission mechanism and third transmission mechanism) to achieve multi-axis linkage, an angle adjustment mechanism is also designed to realize the relative angle adjustment between the coating object and the coating source (target material), which better meets the special requirements of high-precision uniform coating. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the arrangement structure of a coating fixture on a rotating frame according to a preferred embodiment of the present invention.

[0031] Figures 2-3 This is a schematic diagram of the structure of a coating fixture according to a preferred embodiment of the present invention.

[0032] Figure 4 This is a partial structural schematic diagram of a transmission mechanism according to a preferred embodiment of the present invention.

[0033] Figure 5 This is a schematic diagram of the arrangement structure of a clamping mechanism according to a preferred embodiment of the present invention.

[0034] Figures 6-7 This is a schematic diagram of the arrangement structure of a third transmission mechanism on a second transmission mechanism according to a preferred embodiment of the present invention.

[0035] Figure 8 This is a schematic diagram of the cooperation structure of a first dial and a second dial according to a preferred embodiment of the present invention.

[0036] Figure 9 This is a schematic diagram of the engagement structure of the third gear and the fourth gear according to a preferred embodiment of the present invention.

[0037] Figures 10-11 This is a schematic diagram of the cooperation structure between the socket and the fixture of a clamping mechanism according to a preferred embodiment of the present invention.

[0038] Figures 12-13 This is a schematic diagram of an angle adjustment state according to a preferred embodiment of the present invention. Detailed Implementation

[0039] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0040] refer to Figures 1-4 and Figure 6 , Figure 8 The present invention provides a coating fixture 2, which includes a body 27 and a transmission mechanism disposed on the body 27. The transmission mechanism includes a first transmission mechanism, a second transmission mechanism and a third transmission mechanism that are sequentially coupled.

[0041] The body 27 is used for offsetting on the rotating frame 1. That is, the clamp 2 is mounted on the rotating frame 1 via the body 27 and is located outside the rotation center of the rotating frame 1. The first transmission mechanism includes a first rotating body 24, the second transmission mechanism includes a second rotating body 26, and the third transmission mechanism includes a third rotating body 29. The first rotating body 24 is rotatably disposed in the body 27 along a first axial direction. The second rotating body 26 is rotatably disposed in the first rotating body 24 along a second axial direction and is rotatably fitted on the outer side of the body 27. The third rotating body 29 is rotatably fitted on the second rotating body 26 along a third axial direction.

[0042] The first rotating body 24 is used to rotatably connect to the rotating frame 1. The first rotating body 24 rotates along the first axis under the drive of the rotating frame 1, causing the second rotating body 26 to revolve around the first axis. This allows the second rotating body 26 to simultaneously rotate along the second axis under the rotational action of the main body 27. When the second rotating body 26 rotates, it causes the third rotating body 29 to rotate along the third axis, thereby rotating the coating object (coated product) mounted on the third rotating body 29.

[0043] In some embodiments, the first axis and the second axis are parallel.

[0044] In some embodiments, the first axis is orthogonal to the third axis.

[0045] In some embodiments, the second axis is orthogonal to the third axis.

[0046] In this embodiment, the rotating frame 1 is configured to rotate horizontally within the coating equipment. When the clamp 2 is mounted on the rotating frame 1, it is placed vertically, as shown below. Figures 1-3 As shown. The first and second axes are both vertical and parallel to the rotation axis of the rotating frame 1, while the third axis is horizontal.

[0047] In some embodiments, there is one second rotating body 26 (second transmission mechanism) and it is biased on the first rotating body 24.

[0048] In some embodiments, multiple second rotating bodies 26 (second transmission mechanisms) are provided on the first rotating body 24 around the first axis, such as... Figures 1-3 As shown. Preferably, a plurality of second rotating bodies 26 are evenly arranged around the first axis and along the circumference of the clamp 2. When the rotating frame 1 drives the first rotating body 24 to rotate along the first axis, it drives each second rotating body 26 to revolve around the first axis. In other words, when the rotating frame 1 drives the clamp 2 to rotate, each second rotating body 26 revolves around the rotation center (first axis) of the clamp 2 in the circumferential direction. Furthermore, each second rotating body 26, driven by the rotational cooperation of the body 27, also rotates along the second axis at the same time. The following description takes as an example that there are multiple second transmission mechanisms (second rotating bodies 26), and that the multiple second transmission mechanisms are evenly arranged around the first axis and along the circumference of the clamp 2. Figure 2 An example of a clamp 2 with seven second transmission mechanisms (second rotating bodies 26) is shown, but it is not limited to this.

[0049] refer to Figure 3 , Figure 4 , Figure 6 and Figure 8 In some embodiments, the body 27 includes a chassis 271 and a first rotating engagement portion 272 disposed on the chassis 271. The first rotating engagement portion 272 is horizontally disposed on the top surface of the chassis 271 and connected to the chassis 271.

[0050] The first rotating body 24 includes a turntable 243 (rotating platform). A first rotating shaft 241 is provided at the rotation center of the turntable 243, and the first rotating shaft 241 is coaxial with the first axis. The turntable 243 is horizontally arranged, and the first rotating shaft 241 passes vertically through the rotation center of the turntable 243 and is connected to the turntable 243. The lower end (first end) of the first rotating shaft 241, which extends from the bottom surface of the turntable 243, is rotatably disposed in the chassis 271 and the first rotating mating part 272. The lower end of the first rotating shaft 241 passes through the rotation center of the first rotating mating part 272 and exits the bottom surface of the chassis 271 (body 27) for further connection with the rotating frame 1. The first rotating shaft 241 and the first rotating mating part 272 can be rotatably fitted by bearings. The chassis 271 may be provided with a through hole, through which the lower end of the first rotating shaft 241 can exit the bottom surface of the chassis 271.

[0051] The second rotating body 26 includes a second rotating shaft 261 rotatably disposed in the turntable 243, the second rotating shaft 261 being coaxial with the second axis. The second rotating shaft 261 passes vertically through a position other than the rotation center of the turntable 243, and the second rotating shaft 261 and the turntable 243 are rotatably engaged via bearings. A second rotating engagement portion 265 is sleeved on the second rotating shaft 261 located on the lower side of the turntable 243. The second rotating engagement portion 265 is horizontally arranged, and its outer side is rotatably engaged with the outer side of the first rotating engagement portion 272. A third rotating engagement portion 262 is sleeved on the second rotating shaft 261 located on the upper side of the turntable 243, the third rotating engagement portion 262 being horizontally arranged.

[0052] The third rotating body 29 includes a third rotating shaft 292, which is coaxial with the third axis. The third rotating shaft 292 is horizontally disposed on one side of the second rotating shaft 261, and the first end of the third rotating shaft 292 ( Figure 6 , Figure 8 A fourth rotating engagement part 291 is sleeved on the left end of the shaft. The fourth rotating engagement part 291 is vertically disposed on the third rotating shaft 292 in the horizontal direction, and the fourth rotating engagement part 291 rotates and engages with the outer side of the third rotating engagement part 262 on the second rotating shaft 261 through its outer side. Among them, the third rotating engagement part 262 serves as a transmission member, and the fourth rotating engagement part 291 serves as a driven member.

[0053] refer to Figures 2-12 In some embodiments, the second end of the third rotating shaft 292 ( Figure 8 and Figure 11 A clamping mechanism 21 is provided on the right end (in the middle). The clamping mechanism 21 is used to hold the object to be coated (see reference). Figure 10The object to be coated in the middle (3). When the first rotating shaft 241 rotates under the drive of the rotating frame 1, it drives the second rotating shaft 261 to revolve around the first rotating shaft 241 through the turntable 243. Under the rotational engagement between the second rotating engagement part 265 and the first rotating engagement part 272, the second rotating engagement part 261 also rotates on its own axis (the first rotating engagement part 272 is stationary relative to the rotating frame 1, and the second rotating engagement part 265 rotates around the side of the first rotating engagement part 272 under the drive of the revolution of the second rotating shaft 261, based on the rotational engagement between it and the first rotating engagement part 272, thereby causing the second rotating shaft 261 to rotate on its own axis while revolving). This drives the third rotating engagement part 262 to rotate, and the second rotating shaft 261 drives the fourth rotating engagement part 291 to rotate through the rotational engagement between the third rotating engagement part 262 and the fourth rotating engagement part 291. The fourth rotating engagement part 291 then drives the third rotating shaft 292 to rotate on its own axis, thereby driving the clamping mechanism 21 connected to the third rotating shaft 292 and the coating object disposed on the clamping mechanism 21 to rotate.

[0054] refer to Figures 3-6 In some embodiments, the second rotating shaft 261 includes a fourth rotating shaft 264 and a fifth rotating shaft 263 connected along a second axial direction, and the fourth rotating shaft 264 and the fifth rotating shaft 263 are arranged vertically. The fourth rotating shaft 264 is rotatably mounted in the turntable 243, and a second rotating engagement portion 265 is disposed on the lower end of the fourth rotating shaft 264 on the lower side of the turntable 243, and rotatably engages with the outer side of the first rotating engagement portion 272. The lower end of the fifth rotating shaft 263 is connected to the upper end of the fourth rotating shaft 264 located on the upper side of the turntable 243. Optionally, the fifth rotating shaft 263 and the fourth rotating shaft 264 can be connected by a plug-in connection.

[0055] Multiple third rotating engagement parts 262 are sequentially and spaced apart on the fifth rotating shaft 263 along its axial direction. A first support part 23 is provided on one side of the fifth rotating shaft 263, vertically mounted on the turntable 243, and is used to mount the third transmission mechanism (third rotating body 29). There are multiple third transmission mechanisms, and each third rotating engagement part 262 is used to engage with one of the third transmission mechanisms. The first support part 23 rotatably houses the third rotating shafts 292 of each third transmission mechanism. Each third rotating shaft 292 is sequentially and spaced apart from bottom to top on the first support part 23, and their positions correspond to the third rotating engagement parts 262. The first end of each third rotating shaft 292 ( Figure 6 A fourth rotating engagement part 291 is correspondingly provided on the left end (in the middle), and each fourth rotating engagement part 291 is rotatably engaged with a third rotating engagement part 262. The second end of each third rotating shaft 292 ( Figure 6A clamping mechanism 21 is provided on the right end (in the middle), and each clamping mechanism 21 is used to hold a coating object. The third rotating shaft 292 and the first support part 23 can be rotated together by bearings.

[0056] This invention designs a first transmission mechanism, a second transmission mechanism, and a third transmission mechanism that work in sequence to form a four-axis linkage coating fixture 2 in conjunction with a rotating frame 1. This allows the object to be coated, mounted on the fixture 2, to pass through the coating source of the coating equipment at a certain angle. As a result, the front and side surfaces of the object to be coated have similar particle deposition angles. Furthermore, by rotating along the third axis, the different sides of the object to be coated can rotate alternately toward the coating source, thereby ensuring that the cumulative deposition angle (cumulative deposition amount) on each coating surface of the object is consistent. This achieves the requirement for high-quality coating with uniform 3D surface of the object.

[0057] In some embodiments, an angle adjustment mechanism is also included. The angle adjustment mechanism is used to adjust the orientation of the third axis relative to the second axis by adjusting the rotational engagement direction of the third rotating body 29 on the second rotating body 26. In other words, the physical orientation of the third axis relative to the turntable 243 can be changed by adjusting the angle adjustment mechanism. If the second rotating shaft 261 is taken as the center, the axis of the third rotating shaft 292 will pass through the center and, with the center as the rotation fulcrum, will perform a circumferential scanning movement along the radial direction of the second rotating shaft 261 under the adjustment of the angle adjustment mechanism.

[0058] The angle adjustment mechanism includes a first support portion 23. The first support portion 23 is configured to rotate around a second axis on a turntable 243 and can be fastened to the turntable 243. By rotating the first support portion 23 around the second axis at a desired angle relative to the fifth rotating axis 263 in an unfastened state, the third rotating axis 292 on the first support portion 23 is driven to move accordingly, thereby changing the mating position (orientation) of the fourth rotating mating portion 291 on the third rotating mating portion 262. Thus, by adjusting the direction of the third axis relative to the second axis, the orientation of the object being coated when rotated to be close to the coating source (target) by the rotation of the turntable 1 and the turntable 243 is adjusted.

[0059] refer to Figures 2-5 and Figures 12-13In some embodiments, a top plate 244 is connected to the top surface of the turntable 243 away from the main body 27. The top plate 244 is horizontally positioned above the turntable 243 and can rotate synchronously with the turntable 243. A first rotating shaft 241 and a fourth rotating shaft 264 extend from the top surface of the top plate 244 away from the main body 27. A top cover 25 is rotatably fitted onto the upper end (second end) of the first rotating shaft 241 extending from the top surface of the top plate 244, and the top cover 25 is also rotatably fitted onto the upper end (second end) of the fifth rotating shaft 263 away from the fourth rotating shaft 264. A second support portion 22 is provided between the top cover 25 and the turntable 243. The upper end of the second support portion 22 is connected to the top cover 25, and the lower end of the second support portion 22 passes through the top plate 244 and is connected to the turntable 243. The top cover 25 is supported and connected to the top surface of the turntable 243 through the second support portion 22.

[0060] In some embodiments, a circular recess 2441 surrounding a fourth rotating shaft 264 is provided on the top surface of the top plate 244, and the fourth rotating shaft 264 extends from the center of the bottom surface of the recess 2441. A circular base 232 is provided on the lower end (first end) of the first support part 23, and the first support part 23 is engaged in the recess 2441 through the base 232, so as to realize the desired rotation angle of the top plate 244 (turntable 243) about the second axis relative to the fifth rotating shaft 263.

[0061] In some embodiments, the base 232 has a first arcuate through groove 233 on its surface and a first fastening hole 2442 on the bottom surface of the recess 2441. When the first support part 23 is positioned and fitted in the recess 2441 by the base 232, the first fastener can be passed through the first arcuate through groove 233 from top to bottom and tightened in the first fastening hole 2442 to form a tight fit with the first fastening hole 2442, thereby fastening the first support part 23 to the top surface of the top plate 244, and thus vertically mounting the first support part 23 on the turntable 243.

[0062] Furthermore, a second fastening hole 234 is provided on the end face of the upper end (second end) of the first support part 23, and a second arcuate through groove 252 is provided on the corresponding position of the surface of the top cover 25. By allowing the second fastener 251 to pass through the second arcuate through groove 252 from top to bottom and loosely engage with the second fastening hole 234, the second fastener 251 is in a loose state in the second fastening hole 234. This allows the first support part 23 to slide and rotate along the second arcuate through groove 252 when it is driven laterally, thanks to the sliding action of the second fastener 251 in the second arcuate through groove 252. The recess 2441 on the top plate 244 also provides a fitting effect that facilitates the rotation of the base 232. When the first support 23 is rotated to the desired position, the second fastener 251 can be passed through the second arc groove 252 and tightened in the second fastening hole 234 to form a tight fit with the second fastening hole 234. This allows the upper end of the first support 23 to be positioned on the top cover 25 and the base 232 to be fastened in the recess 2441, so that the first support 23 is in a vertical state. This ensures a good rotational fit between the fourth rotational mating part 291 on the third rotating shaft 292 and the third rotational mating part 262 on the fifth rotating shaft 263 provided on the first support 23.

[0063] In some embodiments, the first fastener and the second fastener 251 may be, for example, a capped screw (screw).

[0064] In some embodiments, the number of second arc-shaped through slots 252 can be one or more. The arc angle of the second arc-shaped through slot 252 can be adjusted according to actual needs. For example, the number of second arc-shaped through slots 252 can be [number missing]. Figure 12 and Figure 13 As shown in the two examples, the arc angle of the second arc groove 252 is preferably 90 degrees. However, it is not limited to this.

[0065] The first support part 23, the base 232 with a first arc through groove 233 at the lower end of the first support part 23 and the matching structure of the sink 2441, and the top cover 25 with a second arc through groove 252 and the matching structure of the upper end of the first support part 23 can together form an angle adjustment mechanism.

[0066] Figure 12 An example of an angle adjustment state is shown where, after the orientation of the clamping mechanism 21 (third rotating shaft 292) on the clamp 2 is adjusted by the angle adjustment mechanism, the clamping mechanism 21 is rotated counterclockwise along the second arc groove 252 to a position where it is restricted to the second end of the second arc groove 252. Figure 13This illustration shows an example of another angle adjustment state where, after adjusting the orientation of the clamping mechanism 21 (third rotating shaft 292) on the clamp 2 via the angle adjustment mechanism, the clamping mechanism 21 is rotated clockwise along the second arcuate through-slot 252 to a position where it is restricted to the first end of the second arcuate through-slot 252. Figure 12 and Figure 13 As can be seen, by adjusting the angle of the angle adjustment mechanism, the clamping mechanism 21 can change its orientation relative to the clamp 2 within a large angle range. Therefore, the coating angle of the coating object can be adjusted to the optimal state according to the complex coating surface conditions on different coating objects, so that the cumulative deposition angle of each surface is consistent and the deposition film thickness is similar, thus achieving the high-quality coating requirement of uniform 3D surface of the coating object.

[0067] Therefore, based on the rational design of the transmission mechanisms at each level to achieve multi-axis linkage, this utility model also achieves the adjustment of the relative angle between the coating object and the coating source (target material) by designing an angle adjustment mechanism, so that the coating object can pass through the coating source of the coating equipment at the required tilt angle, thereby better meeting the special requirements of high-precision uniform coating.

[0068] In some embodiments, a conductivity enhancement mechanism is further included. The conductivity enhancement mechanism is electrically connected between the first rotating body 24 and the second rotating body 26 to improve the conductivity between the first rotating body 24 and the second rotating body 26.

[0069] refer to Figure 4 In some embodiments, the conductivity enhancement mechanism includes a conductive brush 28 disposed on the top surface of the turntable 243 and located below the top plate 244. The conductive brush 28 is fixed to the turntable 243 and elastically abuts against the side of the fourth rotating shaft 264 (the second rotating shaft 261) to enhance the conductivity between the turntable 243 and the fourth rotating shaft 264.

[0070] Furthermore, the conductive brush 28 includes a brush body with a built-in conductive elastic element. One end of the elastic element has a conductive contact that extends from the side of the brush body facing the fourth rotating shaft 264 and elastically abuts against the side of the fourth rotating shaft 264. This ensures that the fourth rotating shaft 264 maintains a good electrical connection with the turntable 243 through the conductive brush 28 during its revolution and rotation. Optionally, the elastic element may include a spring. The conductive brush 28 is made of a conductive metal material, such as brass.

[0071] refer to Figure 8 , Figures 10-11 In some embodiments, the clamping mechanism 21 includes a second end connected to the third rotating shaft 292. Figure 11The fixture 211 consists of a socket 211 on the right end (center) and a fixture 212 for engaging with the socket 211. The socket 211 includes a housing with a cavity containing a rolling element 2113 and an elastic body 2111. One end of the elastic body 2111 elastically abuts against the inner wall of the cavity, and the other end elastically abuts against the rolling element 2113. The housing surface has an engagement port 2112 communicating with the cavity. One end (engagement end) of the fixture 212 has a plug 2121 with a slot on its surface. When the plug 2121 is inserted into the engagement position in the engagement port 2112, the rolling element 2113 elastically falls into the slot, engaging the fixture 212 with the socket 211. The other end (working end) of the fixture 212 is used to set the coating object 3. Optionally, the elastic body 2111 includes a spring. Rolling elements 2113 include rollers or balls.

[0072] Therefore, by designing a clamping mechanism 21 with quick-connect function, this utility model can realize the rapid loading and unloading of the coating object, thereby improving production efficiency.

[0073] In some embodiments, the first rotating engagement portion 272 includes a first gear, and the second rotating engagement portion 265 includes a second gear. The first gear and the second gear are arranged horizontally, and the second gear engages with the outer periphery of the first gear and meshes with the first gear, thereby forming a rotating engagement between them.

[0074] In some embodiments, the third rotating engagement portion 262 includes a first dial 2621, and the fourth rotating engagement portion 291 includes a second dial 2911, such as... Figure 6 and Figure 8 As shown ( Figure 4 The third rotating engagement part 262 is the first gear 2621, and the fourth rotating engagement part 291 is the second gear 2911. The first gear 2621 and the second gear 2911 each include a wheel body and multiple paddles evenly distributed on the outer side of the wheel body. Preferably, the end faces of the paddles have rounded corners to reduce frictional resistance. The first gear 2621 and the second gear 2911 generate a paddle-driven effect through the engagement of their respective paddles. Specifically, the first gear 2621 and the second gear 2911 are orthogonally arranged. When the first gear 2621 rotates with the fifth rotating shaft 263, the paddles on the first gear 2621 will paddle the paddles on the second gear 2911, thereby causing the second gear 2911 to rotate, which in turn drives the third rotating shaft 292 to rotate.

[0075] In some embodiments, the third rotating engagement portion 262 includes a third gear 2622, and the fourth rotating engagement portion 291 includes a fourth gear 2912, such as... Figure 7 and Figure 9As shown. The third gear 2622 and the fourth gear 2912 are orthogonally arranged and mesh with each other, thus forming a rotational engagement between them. Optionally, the third gear 2622 and the fourth gear 2912 are bevel gears.

[0076] In some embodiments, the spacing between the third rotating mating parts 262 (first gear 2621 / third gear 2622) on the fifth rotating shaft 263 is limited by a spacing sleeve 266 provided on the fifth rotating shaft 263. Figure 8 and Figure 9 As shown.

[0077] In some embodiments, a protective cover 231 is provided on the outer side of the fifth rotating shaft 263. The protective cover 231 is connected to the first support portion 23 to seal the side of the fifth rotating shaft 263, preventing the membrane layer from intruding into the interior and affecting the transmission. Figure 2 , Figure 4 , Figure 5 As shown.

[0078] In some embodiments, the second support portion 22 is disposed around the outer side of the first rotating shaft 241 to seal the side of the first rotating shaft 241 and prevent the membrane layer from intruding into the interior and affecting the transmission.

[0079] In some embodiments, a cover 242 is provided on the top surface of the top plate 244, and the cover 242 covers the turntable 243 and the main body 27 from the side. The cover 242 is used together with the chassis 271 to protect the various transmission structures located on the chassis 271 and prevent the membrane layer from intruding into the interior and affecting the transmission.

[0080] The present invention provides a coating rotating frame 1, comprising a frame body on which the coating fixture 2 of the present invention is mounted. The rotating frame 1 is used to drive the fixture 2 to revolve around the rotation center of the rotating frame 1, and to drive the first rotating body 24 on the fixture 2 to rotate along the first axis, thereby causing the fixture 2 to rotate simultaneously.

[0081] refer to Figure 1 In some embodiments, the frame includes an upper base plate 12 and a lower base plate 11. A plurality of fixing mechanisms 13 are provided circumferentially on the frame for mounting clamps 2. The clamps 2 are mounted between the upper base plate 12 and the lower base plate 11 and positioned on the fixing mechanisms 13. A plurality of clamps 2 may be provided circumferentially on the rotating frame 1. Figure 1 The image only schematically shows one clamp 2 mounted on the rotating frame 1, but it is not limited to this.

[0082] The clamp 2 is rotatably mounted between the fixing mechanism 13 on the upper base plate 12 and the lower base plate 11 via the upper and lower ends of the first rotating shaft 241. When the clamp 2 is placed, the body 27 (base plate 271) can engage with the fixing mechanism 13 on the lower base plate 11, thereby restricting the horizontal rotation of the body 27.

[0083] A rotation drive mechanism (not shown) is provided at the bottom of the rotating frame 1. A drive shaft connected to the rotation drive mechanism is provided on the fixing mechanism 13 on the lower base plate 11. The lower end of the first rotating shaft 241 is engaged with the upper end of the drive shaft. The rotation drive mechanism is used to make the rotating frame 1 rotate around its rotation center, causing the clamp 2 to revolve around the rotating frame 1. The rotation drive mechanism, by making the drive shaft rotate, causes the first rotating shaft 241 to rotate, which in turn causes the second rotating shaft 261 to revolve around the first rotating shaft 241, so that the clamp 2 set on the fixing mechanism 13 rotates. At the same time, the second rotating shaft 261 also drives the third rotating shaft 292 and its clamping mechanism 21 and the object to be coated to rotate by rotating.

[0084] This invention discloses a coating apparatus, including a coating chamber, in which the coating rotating frame 1 of this invention is disposed. During coating, each object to be coated on a clamp 2 rotatably mounted on the rotating frame 1 passes the coating source at a certain tilt angle. This allows the front and side surfaces of the object to have similar particle deposition angles, and allows the different sides of the object to rotate alternately toward the coating source, thereby ensuring that the cumulative deposition angle (cumulative deposition amount) on each coating surface of the object is consistent and the film thickness is similar.

[0085] Table 1 shows the film thickness data collected after coating the test piece using the coating fixture 2 of this invention, and the comparison results with the film thickness data collected after coating the test piece using a conventional fixture. The test piece used was an oblong stainless steel part with a certain thickness (reference). Figure 10 The coating object 3 in the test was tested at an angle where the side and end faces (narrow faces) of the test piece were directly facing the target (when passing the target). The film thickness data collected were taken from five positions: the front A, upper side B, lower side B', left end C, and right end C' of the test piece. The proportional relationship between the film thicknesses was shown through data analysis.

[0086] Table 1:

[0087]

[0088] As can be seen from the data in Table 1, after coating the test piece using the fixture 2 of this invention, the film thickness on all surfaces of the test piece is basically consistent, exhibiting high film thickness uniformity. In contrast, when coating the test piece using existing fixtures, the film thickness on the sides and end faces is much smaller than that on the front face, resulting in poor film thickness uniformity. Therefore, this invention, through a reasonable fixture structure design, not only avoids the shading effect but also ensures the uniformity of film thickness distribution on the front and sides of the coated object.

[0089] In summary, this utility model, through the design of a first transmission mechanism, a second transmission mechanism, and a third transmission mechanism that work in sequence, can cooperate with the rotating frame 1 to form a four-axis linkage coating fixture 2. Compared with existing two-stage or three-stage fixtures that can only rotate around a vertical axis, the coating fixture 2 of this utility model can also rotate around a horizontal axis (third axis). Not only can it achieve similar particle deposition angles on the front and sides of the object to be coated by passing the coating source of the coating equipment at a certain angle, but it can also rotate along the third axis so that the different sides of the object to be coated alternately rotate towards the coating source. This ensures that the cumulative deposition angle (cumulative deposition amount) on each coating surface of the object is consistent and the film thickness is similar, avoiding the problem of large differences in color and performance between the front and sides in the prior art. This achieves the requirement of high-quality coating with uniform 3D surface of the object to be coated.

[0090] The above are merely preferred embodiments of the present utility model. These embodiments are not intended to limit the scope of protection of the present utility model. Therefore, any equivalent changes made based on the description and drawings of the present utility model should also be included within the scope of protection of the present utility model.

Claims

1. A coating fixture, characterized in that, include: ontology; The first transmission mechanism includes a first rotating body, which is rotatably disposed in the body along a first axial direction; The second transmission mechanism includes a second rotating body, which is rotatably disposed in the first rotating body along a second axis and rotatably fitted on the outer side of the main body; The third transmission mechanism includes a third rotating body, which is rotatably fitted onto the second rotating body along a third axis. The main body is used to be offset on the rotating frame, and the first rotating main body is used to rotate along the first axis under the drive of the rotating frame, thereby driving the second rotating main body to revolve around the first axis. Under the rotational cooperation of the main body, the second rotating main body also rotates along the second axis, thereby driving the third rotating main body to rotate along the third axis, so as to drive the coating object disposed on the third rotating main body to rotate.

2. The coating fixture according to claim 1, characterized in that, The first axis and the second axis are parallel; and / or, the first axis and / or the second axis are orthogonal to the third axis.

3. The coating fixture according to claim 1, characterized in that, The second transmission mechanism is one unit, or multiple second transmission mechanisms are arranged around the first axial direction; the main body includes a chassis and a first rotating engagement part disposed on the chassis, the first rotating body includes a turntable, a first rotating shaft is provided at the rotation center of the turntable, the first rotating shaft is coaxial with the first axial direction, the first end of the first rotating shaft is rotatably disposed in the chassis and the first rotating engagement part, the second rotating body includes a second rotating shaft rotatably disposed in the turntable, the second rotating shaft is coaxial with the second axial direction, a second rotating engagement part is provided on the second rotating shaft located on one side of the turntable, the second rotating engagement part is rotatably engaged with the outside of the first rotating engagement part, and a third rotating engagement part is provided on the second rotating shaft located on the other side of the turntable, the third rotating engagement part... The main body includes a third rotating shaft, which is coaxial with the third axis. A fourth rotating engagement part is provided on the first end of the third rotating shaft, which rotates and engages with the third rotating engagement part. A clamping mechanism is provided on the second end of the third rotating shaft, which is used to hold the coating object. When the first rotating shaft rotates under the drive of the rotating frame, it drives the second rotating shaft to revolve around the first rotating shaft through the turntable. The second rotating shaft also rotates simultaneously under the rotational engagement between the second rotating engagement part and the first rotating engagement part. The second rotating shaft drives the third rotating shaft to rotate through the rotational engagement between the third rotating engagement part and the fourth rotating engagement part, thereby driving the coating object set on the clamping mechanism to rotate.

4. The coating fixture according to claim 3, characterized in that, The second rotating shaft includes a fourth rotating shaft and a fifth rotating shaft connected along the second axial direction. The fourth rotating shaft is rotatably disposed in the turntable. The second rotating engagement part is disposed on the fourth rotating shaft. A plurality of third rotating engagement parts are sequentially and spaced apart along the axial direction on the fifth rotating shaft. A first support part is provided on one side of the fifth rotating shaft. The first support part is disposed on the turntable. There are a plurality of corresponding third transmission mechanisms. The third rotating shaft of each third transmission mechanism is rotatably disposed in the first support part. The first end of each third rotating shaft is correspondingly provided with the fourth rotating engagement part. Each fourth rotating engagement part is rotatably engaged with one third rotating engagement part. The second end of each third rotating shaft is correspondingly provided with the clamping mechanism. Each clamping mechanism is used to correspondingly set one of the coating objects.

5. The coating fixture according to claim 4, characterized in that, Also includes: An angle adjustment mechanism is provided, which is used to adjust the orientation of the third axis relative to the second axis by adjusting the rotational engagement direction of the third rotating body on the second rotating body; wherein the angle adjustment mechanism includes a first support portion, which is configured to be rotatable on the turntable around the second axis and can be fastened on the turntable. By rotating the first support portion around the second axis at a required rotation angle relative to the fifth rotating axis in an unfastened state, the third rotating axis on the first support portion is driven to follow, thereby changing the engagement position of the fourth rotating engagement portion on the third rotating engagement portion. Thus, by adjusting the orientation of the third axis relative to the second axis, the orientation of the coating object when it is rotated to be close to the coating source by the rotation of the turntable is adjusted; and / or, it further includes: a conductivity enhancement mechanism, which includes a conductive brush disposed on the turntable, the conductive brush being fixed on the turntable and elastically abutting against the side of the fourth rotating axis.

6. The coating fixture according to claim 5, characterized in that, A top plate is connected to the top surface of the turntable away from the main body. The first rotating shaft and the fourth rotating shaft extend from the top surface of the top plate away from the main body. A circular groove is provided on the top surface of the top plate surrounding the fourth rotating shaft. The fourth rotating shaft extends from the center of the bottom surface of the groove. A circular base is provided on the first end of the first support part. The first support part is engaged with the groove through the base, realizing the rotation of the turntable around the second axis with the required rotation angle relative to the fifth rotating shaft. A first arc-shaped through groove is provided on the surface of the base. A first fastening hole is provided on the bottom surface of the groove. By passing a first fastener through the first arc-shaped through groove and tightly engaging with the first fastening hole, the first support part is secured by the groove. The top plate is fastened to the turntable. A top cover is rotatably fitted onto the second end of the first rotating shaft that extends out of the top surface of the top plate. The top cover is also rotatably fitted onto the second end of the fifth rotating shaft that is away from the fourth rotating shaft. The top cover is connected to the top surface of the turntable via a second support portion. A second fastening hole is provided on the end face of the second end of the first support portion. A second arc-shaped through groove is correspondingly provided on the surface of the top cover. By allowing the second fastener to pass through the second arc-shaped through groove and loosely engage with the second fastening hole, the first support portion is driven to slide and rotate along the second arc-shaped through groove. By allowing the second fastener to pass through the second arc-shaped through groove and tightly engage with the second fastening hole, the second end of the first support portion is positioned on the top cover.

7. The coating fixture according to claim 3, characterized in that, The clamping mechanism includes a socket connected to the second end of the third rotating shaft and a fixture for engaging with the socket. The socket includes a housing with a cavity inside. The cavity contains a rolling element and an elastic element. One end of the elastic element elastically abuts against the inner wall of the cavity, and the other end of the elastic element elastically abuts against the rolling element. The surface of the housing has a plug-in port communicating with the cavity. One end of the fixture has a plug with a slot on its surface. When the plug is inserted into the engagement position in the plug-in port, the rolling element elastically falls into the slot, causing the fixture to engage with the socket. The other end of the fixture is used to set the coating object.

8. The coating fixture according to claim 3, characterized in that, The third rotating engagement part includes a third gear, and the fourth rotating engagement part includes a fourth gear, or the third rotating engagement part includes a first gear wheel, and the fourth rotating engagement part includes a second gear wheel.

9. A coating turntable, characterized in that, The rotating frame is provided with a coating fixture as described in any one of claims 1-8. The rotating frame is used to drive the fixture to revolve around the rotation center of the rotating frame, and to drive the first rotating body to rotate along the first axis, so as to drive the fixture to rotate simultaneously.

10. A coating apparatus, comprising a coating chamber, characterized in that, The coating cavity is provided with the coating rotating frame as described in claim 9.

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